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Priority claimed from JP33826894Aexternal-prioritypatent/JP2773663B2/ja
Priority claimed from JP33963194Aexternal-prioritypatent/JP2773665B2/ja
Priority claimed from JP16301095Aexternal-prioritypatent/JPH08335397A/ja
Priority claimed from JP16300995Aexternal-prioritypatent/JPH08335398A/ja
Application filed by Yamaha CorpfiledCriticalYamaha Corp
Application grantedgrantedCritical
Publication of TW288122BpublicationCriticalpatent/TW288122B/zh